Improvement in heating-stoves



Heating-Stmas.

Patented Aug. 25,1874.

UNITED STATES PATENT OFFICE.

sILAs COOK, OF MAGNOLIA, IowA.

IMPROVEMENT IN HEATING STOVES.

Specification forming part of Letters Patent No. 154,459, dated August 25, 1874 application filed March 20, 1874.

To all whom it may concern:

Be it known that I, SILAS COOK, of Magnolia, in the county of Harrison and State of Iowa, have invented a new and useful Improvement in Heating-Stoves; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings forming part of this specification. f

This inventionrelates to an improvement in the class of heating-stoves in which the products of combustion 'are caused to take a circuitous route to the escape-due, in order to secure more Iperfect utilization of heat. The invention relates tothe combination of parts,

.whereby the `products of combustion are returned through the stove to be reheated af-A ter passing through an exterior vertical flue, and their course at starting is directed npward from the grate or downward through the same, as required, in the manner herein after described.

Figure 1 is a sectional elevation ofthe stove on the line .r m of Fig. 2. Fig. 2 is a side elevation. Fig. 3 is a cross-section on the line y y of Fig. l. i

A is the fire-box. B is the fire-door. C C is a partition between hre-boit A and ash-box E, forming also the bottom of the fire-box. P is the opening Athrough which heat and draft pass down and into ash box R is the grate,.to be rotated when it is Qnecessary to free it from ashes. Y

I do not continemyselfto the particular arrangement of grate here shown. Ti

A solid plate may be used instead of the grate, by making said plate larger vthan the opening P, and placing it at a proper distance vbelow to allow thedraft to pass.

Experience has proved that with this arl rangement, with either grate or plate, perfect combustion is obtained.

F F is the pipe through which heat and draft pass from the ash-box E and up in the direction of the arrow. G G is the heatingchamber, that receives the heat and draft near the top, and discharges it near the bottom of said chamber. H is the opening through which the draft is discharged.

It is found that by the downward draft in chamber G G, as the air cools by coming in contact with the walls of the chamber, it descends more rapidly than is required to keep up a sufficient current in the stove; conscquently there is an upward current formed in the center of the chamber, which carries back the hottest portion of the air and discharges that which has lost the heat through the walls of the chamber only.

O O is the partition between fire-box A and heating-chamber G G, in which partition there is no Opening. I I I I are dampers to regulate the draft and to change the same between chamber A and ash-box E.

which to take out the ashes. ing into the pipe L to change the draft when combustion is too rapid. 'I T (the line of the Y J is the door at K is the open- 

